Which of the following is a way to ascertain maximum and recommended weights that can be supported?

Referring to the shipping ticket or other documentation is a reliable method to ascertain the maximum and recommended weights that can be supported. This documentation typically includes detailed specifications from the manufacturer regarding the weight limits for the equipment or materials being used. It provides essential information about the load capacity, which is critical for ensuring safety on a construction site.

Utilizing precise documentation helps prevent accidents caused by overloading, which is a leading factor in equipment failure and injuries. Accurate references from shipping tickets or manuals ensure that operators are following established safety protocols and are aware of any limits specific to the equipment they are using.

Other methods mentioned, like using estimated weight calculations or relying on the crane's appearance, introduce uncertainty and potential for error. Estimations may not reflect the true capabilities of the equipment, while relying solely on visual assessments might overlook critical specifications that are only detailed in official documentation. Ignoring load chart ratings would lead to disregarding essential safety information that is necessary for responsible operation.